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File:Secchi disk pattern.svg

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English: The pattern conventionally painted on Secchi disks, especially those used in lakes.
Polski: Krążek Secchiego służący do pomiaru przezroczystości wody.
Source Own work
Author User:Mysid


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1 November 2005

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current09:15, 20 February 2007Thumbnail for version as of 09:15, 20 February 2007600 × 600 (774 bytes)Mysid{{Information |Description=The pattern conventionally painted on w:Secchi disks, especially those used in lakes. |Source=Own work. |Date=November 1, 2005 |Author=w:User:Mysid |Permission= |other_versions= }}
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